Historical on-time performance
San Antonio to Newark
1,569 miData through May 2026Source: US DOT · BTS
Flights on SAT–EWR arrive on time 86% of the time over the last 12 months.
On-time rate86%arrived within 15 min
p90 delay20 min1 in 10 flights is worse (tail risk)
Cancelled0.9%of scheduled flights
based on 530 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesOn-time86%Medianon timep9020 minCancel0.9%Flights530
Why flights run late
Delay causes
- Airline26%
- Weather1%
- Air traffic (NAS)68%
- Late aircraft5%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
When flights don't go
Why flights were cancelled
- Airline40%
- Weather60%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 5 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly SAT → EWR
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 91% on time.
- Mornings91% on time · p90 5 min · 1,041 flights
- Middays75% on time · p90 75 min · 690 flights
- Afternoons66% on time · p90 125 min · 181 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 77% to 89% on time.
- Tuesdays89% on time · p90 10 min · 300 flights
- Wednesdays87% on time · p90 20 min · 286 flights
- Saturdays84% on time · p90 45 min · 235 flights
- Sundays83% on time · p90 45 min · 268 flights
- Mondays80% on time · p90 35 min · 309 flights
- Fridays79% on time · p90 70 min · 303 flights
- Thursdays77% on time · p90 45 min · 310 flights
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